skinTrait.setSkinPersistent("Erebus","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" , "ewogICJ0aW1lc3RhbXAiIDogMTY3OTc5OTAyMzQ2NiwKICAicHJvZmlsZUlkIiA6ICJhNTkyMjkwNDVjMjI0MGUyOTM0ZjMxZWFjMzNiY2IzNSIsCiAgInByb2ZpbGVOYW1lIiA6ICJTbHVnRGVhbGVyQWdhaW4iLAogICJzaWduYXR1cmVSZXF1aXJlZCIgOiB0cnVlLAogICJ0ZXh0dXJlcyIgOiB7CiAgICAiU0tJTiIgOiB7CiAgICAgICJ1cmwiIDogImh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMTI4MDU4ODc0NDhkNWFlYWJhNDRhOTcwOGQ2M2RhMTU0OWE1MmFhMzA5YzM4ZjE1NTUwZjE0N2MyNjlkNDY1IgogICAgfQogIH0KfQ==");
im not sure what the first arg "skinName" is
as for the encoded signature and texture i think its good